Comment by fc417fc802

While cannibalism is related to transmission in some cases I don't understand it to have anything to do with prion formation in and of itself. See scrapie for example. While highly contagious the underlying cause of scrapie is typically (afaiu) genetic and transmissible through the environment over fairly long periods of time.

Which is to say that things are likely even a bit worse than you seem to be making out.